finding json diff fails using JSONAssert

Question

I was hoping to use Jackson to find JSON diff but it does not give detailed error messages.

So I tried using JSOnAssert to find the diff between two JSON strings.

Answer 1

I tried to email the address at http://jsonassert.skyscreamer.org/ but got a

The following message to jsonassert-dev@skyscreamer.org was undeliverable. The reason for the problem: 5.1.0 - Unknown address error 550-"5.1.1 The email account that you tried to reach does not exist

So I tried ZJsonPatch. I like the fact that using Jackson with it, the ordering of the members does not matter. In other words, I first try to check for equality using Jackson. Jackson is ordering independent. Then if it fails, I use ZJsonPatch to tell me what the diff is.

{"op":"replace","path":"/data/0/successfulIds/1","value":"B9"}

which handles nested JSON well.

ObjectMapper mapper = new ObjectMapper();
JsonNode expected = mapper.readTree(expectedJsonResponse);
JsonNode actual = mapper.readTree(actualJsonResponse);

try {
    assertEquals(expected, actual);
} catch (AssertionError ae) {
    JsonNode patch = JsonDiff.asJson(actual, expected);
    throw new Exception(patch.toString(), ae);
}